Authors:
K. Chrissafis Solid State Physics Department, School of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece

Search for other papers by K. Chrissafis in
Current site
Google Scholar
PubMed
Close
,
M. Lalia-Kantouri Laboratory of Inorganic Chemistry, Department of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece

Search for other papers by M. Lalia-Kantouri in
Current site
Google Scholar
PubMed
Close
, and
P. Aslanidis Laboratory of Inorganic Chemistry, Department of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece

Search for other papers by P. Aslanidis in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract

Two series of copper (I) halide complexes formulated as [(L)CuX(μ2-L)2CuX(L)] and [(L)2Cu(μ2-L)2Cu(L)2]2+, respectively (X = Cl, Br and L = 4,6-dimethylpyrimidine-2-thione (dmpymtH)) were prepared. From the thermogravimetric curves it was found that among the four studied materials, [Cu2(dmpymtH)6]2+2Cl presents a lower thermal stability. For the determination of the activation energy (E) two different methods have been used comparatively, since every method has its own error. These methods were the isoconversional methods of Ozawa, Flynn and Wall (OFW), and Friedman. The dependence of the E on the value of the mass conversion α, as calculated with OFW and Friedman’s methods, can be separated in three distinct regions. The decomposition mechanism is very complex and can be described using at least three different mechanisms with different activation energies. The best fitting of experimental data with theoretical models gave nth-order for all the three mechanisms (Fn–Fn–Fn).

  • 1. Krebs, B, Henkel, G. Transition-metal thiolates: from molecular fragments of sulfidic solids to models for active centers in biomolecules. Angew Chem Int Ed 1991 30:769788 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 2. Holm, RH, Solomon, EJ. Structural and functional aspects of metal sites in biology. Chem Rev 1996 96:22392314 .

  • 3. Raper, ES. Complexes of heterocyclic thione donors. Coord Chem Rev. 1985;61:115184 .

  • 4. Raper, ES. Complexes of heterocyclic thioamides and related ligands. Coord Chem Rev. 1994;129:91156 .

  • 5. Raper, ES. Complexes of heterocyclic thionates. Part 1. Complexes of monodentate and chelating ligands. Coord Chem Rev. 1996;153:199255 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 6. Aslanidis P , Gaki V, Chrissafis K, Lalia-Kantouri M. Luminescence and thermal behaviour by simultaneous TG/DTG-DTA coupled with MS of neutral copper (I) complexes with heterocyclic thiones. J Therm Anal Calorim. doi: .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 7. Aslanidis P , Chrissafis K, Lalia-Kantouri M. Luminescence and thermal behaviour of copper (I) complexes with heterocyclic thiones Part II: Cationic complexes. J Therm Anal Calorim. doi: .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 8. Scaltrino, DV, Thompson, DW, O’Callaghan, JA, Meyer, GJ. MLCT excited states of cuprous bis-phenanthroline coordination compounds. Coord Chem Rev 2000 208:243266 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 9. Mc Millin, DR, McNett, KM. Photoprocesses of copper complexes that bind to DNA. Chem Rev 1998 98:12011220 .

  • 10. Armaroli, N. Photoactive mono- and polynuclear Cu(I)-phenanthrolines. A viable alternative to Ru(II)-polypyridines. Chem Soc Rev. 2001;30:113124 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 11. Ozawa, T. A new method of analyzing thermogravimetric data. Bull Chem Soc Jpn. 1965;38:18811886 .

  • 12. Flynn, JH, Wall, LA. A quick direct method for the determination of activation energy from thermogravimetric data. Polym Lett 1966 4:323328 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 13. Ozawa, T. Kinetic analysis of derivative curves in thermal analysis. J Therm Anal. 1970;2:301324 .

  • 14. Friedman, HL. Kinetics of thermal degradation of char-forming plastics from thermogravimetry. Application to a phenolic plastic. J Polym Sci C. 1964;6:183195.

    • Search Google Scholar
    • Export Citation
  • 15. Vyazovkin, S. Modification of the integral isoconversional method to account for variation in the activation energy. J Comput Chem. 2001;22:178183 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 16. Opfermann, J. Kinetic analysis using multivariate non-linear regression I. Basic concepts. J Therm Anal Calorim. 2000;60:641 .

  • 17. Budrugeac, P, Petre, AL, Segal, E. Some problems concerning the evaluation of non-isothermal kinetic parameters. J Therm Anal Calorim 1996 47:123134 .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Collapse
  • Expand

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
May 2024 10 0 0
Jun 2024 14 0 0
Jul 2024 13 0 0
Aug 2024 32 0 0
Sep 2024 45 0 0
Oct 2024 112 0 0
Nov 2024 1 0 0